3M Scotch-Weld DP760 High Temperature Epoxy Adhesive for Structural Bonding

3M DP760 High Temperature Epoxy Adhesive Performance

3M identifies DP760 as a high-temperature-resistant epoxy with resistance up to 230°C under appropriate validated conditions. The product page lists an open time of approximately 45 to 60 minutes and handling strength in about four to six hours. Its technical data sheet reports work life of approximately 90 minutes for a 5 g mix and 70 minutes for a 10 g mix at 23°C, showing that quantity and process temperature influence usable time.

The base is a modified epoxy and the accelerator is a modified amine. Both components are white non-sag pastes mixed at 2:1 by volume. This consistency supports accurate application through compatible 3M EPX equipment while reducing dripping and adhesive migration before assembly.

Structural Strength at Elevated Temperatures

Published overlap-shear testing on prepared aluminum reports approximately 32 MPa at 23°C after seven days of room-temperature curing. The same program reports about 14.8 MPa at 120°C and 9.7 MPa at 150°C. Floating-roller peel strength is approximately 110 N per 25 mm under the stated laboratory conditions. Production performance depends on substrate preparation, bond-line thickness, joint design, exposure time, and operating environment.

3M recommends a bond-line thickness between approximately 100 and 500 microns. Thinner lines generally maximize shear strength, while thicker lines may improve peel performance. The adhesive can cure for seven days at 23°C, and moderate heating can accelerate the process. Published testing also uses a two-hour cure at 65°C.

7 Benefits of 3M DP760 High Temperature Epoxy Adhesive

• High-temperature resistance: Designed for demanding assemblies exposed to elevated heat.
• Strong structural bonding: Provides high overlap-shear strength on prepared aluminum.
• Non-sag paste: Remains positioned on vertical and irregular bonding areas.
• Extended working time: Allows alignment and adjustment of larger components.
• Simple 2:1 mixing: Supports accurate metering through compatible EPX dispensers.
• Broad substrate capability: Bonds compatible metal, glass, wood, and reinforced plastic.
• Room-temperature cure: Reduces dependence on mandatory heated curing equipment.

Surface Preparation and Application Guidance

Remove paint, oxide, oil, dust, release agents, and contamination before bonding. For steel and aluminum, 3M recommends solvent cleaning, abrasion or sandblasting, and a final solvent wipe. Plastics and rubbers may require isopropyl-alcohol cleaning and light abrasion. Glass may benefit from solvent cleaning followed by a suitable silane adhesion promoter.

Insert the cartridge into the correct EPX applicator, confirm both components flow freely, attach the mixing nozzle, and dispense a small initial quantity. Join the prepared parts within the available open time and prevent movement until handling strength develops. Larger mixed quantities and higher temperatures shorten working time.

Storage and Official 3M Resources

Store unopened material in its original packaging at a maximum of 4°C, do not freeze it, and allow it to reach room temperature before use. Under recommended conditions, 3M lists a shelf life of up to 24 months from production. Review the official 3M DP760 product page and the official 3M DP760 technical data sheet before production use.

Explore our high-temperature epoxy adhesives for additional heat-resistant bonding solutions. Browse our two-part structural adhesives for metal, glass, composite, plastic, wood, transportation, and industrial equipment assembly. Contact our sales team for quotations, regional package availability, mixing nozzles, applicators, technical documents, and export support for 3M DP760 High Temperature Epoxy Adhesive.